Valves and valve actuation – Fluid actuated or retarded – With adjustable limit stop for actuator
Patent
1986-12-31
1987-10-13
Schwadron, Martin P.
Valves and valve actuation
Fluid actuated or retarded
With adjustable limit stop for actuator
92 33, 251288, 285406, 403338, F16K 5100
Patent
active
046993533
ABSTRACT:
A valve actuator for providing rotational drive to a valve through a valve stem, where the valve includes a flange with attachment bolt holes for attachment of the actuator thereto using bolts. The actuator has an outer body having a sidewall and a base end position toward the valve flange, a rotatable output drive member accessible from the base end and adapted for coupling to the valve stem and having rotational end limits, and an attachment base fixedly attached to the body toward the base end and having a base flange and an attachment lip. The lip is attached to the base flange and is spaced apart from the body sidewall to define an annular space therebetween. A plurality of clips are positioned about the lip to secure the body to the valve flange while allowing selective rotation of the body to adjustably set the rotational end limits of the output drive member relative to the valve. The clips each include a body having an aperture for an attachment bolt and an arm extending laterally inward over the lip with a finger projecting into the annular space. The clip further includes a pair of set screws which are adjustably extendable to grasp the lip between the set screws and finger.
REFERENCES:
patent: 3107546 (1963-10-01), Rowland
patent: 3190188 (1965-06-01), Donnelly
patent: 3981409 (1976-09-01), Flanders
patent: 4313367 (1982-02-01), Weyer
patent: 4545289 (1985-10-01), Weyer
Hepperle Stephen M.
Schwadron Martin P.
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